\[\frac{3x^{2} - 16x + 5}{- 4x^{2} + x^{3} - 5x} =\]
\[= \frac{(3x - 1)(x - 5)}{x(x - 5)(x + 1)} = \frac{3x - 1}{x^{2} + x}.\]
\[1)\ 3x^{2} - 16x + 5 =\]
\[= 3\left( x - \frac{1}{3} \right)(x - 5) =\]
\[= (3x - 1)(x - 5)\]
\[D_{1} = 64 - 15 = 49\]
\[x_{1} = \frac{8 + 7}{3} = 5;\ \]
\[x_{2} = \frac{8 - 7}{3} = \frac{1}{3}.\]
\[2) - 4x^{2} + x^{3} - 5x =\]
\[= x\left( x^{2} - 4x - 5 \right) =\]
\[= x(x - 5)(x + 1)\]
\[D_{1} = 4 + 5 = 9\]
\[x_{1} = 2 + 3 = 5;\]
\[x_{2} = 2 - 3 = - 1.\]